AIChE

Now Hear This

May
2001
Career Catalyst
Robert W. Bly
Understand the listening process and follow these guidelines to become a better listener.

Increasing Employee Productivity

September
2001
Management
Charles  Gillard
Maximize workplace efficiency via implementation of best practices using workflow modeling and automation.

Tune Control Loops for Minimum Variability

January
2002
Instrumentation
Lanny A. Robbins
The Robbins tuning rules can reduce the variability of control loop response to about 60% of that observed with Ziegler-Nichols tuning rules.

Relocating Research Operations

May
2002
Management
Richard P. Palluzi
Such projects require enormous planning, experienced staff, and substantial time and money to complete.

Don't Get Burned Picking Dry-Type Flame Arresters

October
2002
Fluids and Solids Handling
Stanley G. Grossel
These commonly used devices rely on an internal medium to extinguish flame fronts and take the punch out of shock waves, protecting piping, equipment and personnel. Selecting such equipment involves considering the probable type of combustion,...

Develop an Effective Crisis Management Strategy

September
2003
Management
Steve Wilson
A thorough crisis-management plan will enable your organization to respond to a crisis promptly and appropriately. Here's how to develop an effective plan.

How To Be An Expert Witness

October
2004
Career Catalyst
Peter R. Lantos
Here’s what you should know about the litigation process to serve as a successful technical witness.

A Strategy for Excellence in Process Development

October
2008
Process Development
Lionel O'Young, Vaibhav V. Kelkar
Here is how to integrate overall process development activities and identify practices that facilitate commercial process development.

Working with Job Search Consultants and Recruiters

October
2009
Career Catalyst
Lisa L. Walker
Search firms and executive recruiters can be powerful allies in a competitive employment environment.This article puts their role in context and provides guidelines on how to work effectively with them.

Designing Four-Pass Trays

April
2010
Back To Basics
Daniel R. Summers
Use this procedure to design four-pass distillation column trays and to balance the vapor/liquid ratio on each tray panel.

Understand the Fundamentals of Centrifugal Pumps

October
2010
Back To Basics
J. Howard Kelly, P.E.
Efficient and reliable pumps can significantly improve a plant’s bottom line. This article reviews important concepts that a chemical engineer must understand and the factors that need to be considered when selecting radial-flow centrifugal pumps.

Learn to Effectively Operate and Maintain Pumps

December
2011
Back To Basics
Daniel Kernan
Centrifugal pumps play a central role in chemical processing. Proper pump operation and maintenance can improve a facility's productivity, reduce downtime, and trim costs.

An Engineer’s Guide to Management of Change

March
2012
Back To Basics
R. Wayne Garland
Using a formal change procedure promotes safe operations and prevents injuries and deaths, and it will also favorably impact the bottom line.

Choose Materials for High-Temperature Environments

February
2001
Materials
Peter  Elliott
High temperatures, stresses, and the presence of elements such as oxygen, sulfur, or the halogens can add up to trouble. Here is how to screen candidate alloys for such service.

Validate Your Engineering Software!

July
2001
Instrumentation
Michael  Tanzio
You really can't guarantee that applications work correctly unless you take specific steps to validate the software.

Applying Six Sigma

July
2002
Management
Yogesh B. Trivedi
By implementing Six Sigma at its ethylene unit, Sasol has been able to recover as much as 65% of the opportunities that could have been lost.

Matching Your Process Constraints Using Dynamic Simulation

December
2003
Information Technology
Miquel A. Alos, Jose J. Macias-Hernandez, Iban Grau
A rigorous dynamic process simulator can be used to evaluate alternative control strategies for an exothermic reacting process in order to improve its safety and product quality.

Forging Career Security

December
2005
Career Catalyst
David Madison
Eight things to do when you’re not job hunting.

Streamlining the Validation Process

March
2007
Management
Robert Mackey, Tim Flanigan
Today, validation is no longer an afterthought for the design and construction of a new or renovated process or facility. It is, in fact, recognized as an integral part of the total project. Fully integrated services are now available to ensure a...

Avoid Problems in Process Water Systems

October
2007
Heat Transfer
Marilyn W. Blaschke, Roger D. Metzler
Prevent corrosion, emulsification and fouling by implementing these operational and chemical measures.

Making the Team: Teams, Teamwork, and Teambuilding

June
2010
Career Catalyst
Eldon R. Larsen
A project team is more than a group of talented professionals. It is an interdependent unit, empowered with understanding, accountabilities and mutual support that permit it to achieve goals — both organizational and personal — more efficiently and...

Computational Science: Enabling Technology Development

January
2011
On The Horizon
Ning Yang, Jinghai Li, Wei Wang, Wei Ge, Chris Guenther, Anthony Cugini, Madhava Syamlal
Computational science will play a key role in accelerating technology development and in the realization of virtual process engineering.

Navigating the Legal Landscape

August
2011
Special Section
Mary Ellen Ternes, Arnold W. Reitze Jr.
A legal framework governing carbon sequestration will need to be put in place before major carbon capture and storage (CCS) projects can get underway. A final rule issued under the Safe Drinking Water Act sets minimum requirements, but this is just...

Update

March
2012
News Update
Updates in this issue include: State of the Union Address Identifies Importance of Manufacturing and Energy to U.S. Economy Scorpions Inspire Tough Surface Nanorods Line Up for Assembly Nanosphere Structure Boosts Light Absorption Zeolite Catalyst...

Biobutanol – A Replacement for Bioethanol?

August
2008
SBE Special Section
Ron Cascone
Ethanol, the leading incumbant biofuel, has several limitations.Butanol overcomes many of these, and holds promise as the next important transportation biofuel.

Hydrogen: Liability or Asset?

September
2002
Reactions and Separations
Dennis Vauk, Ian Moore, Nick  Hallale
In a petroleum refinery, viewing hydrogen as an asset rather than a liability can lead to increased profits. The key is in the mindset. A typical investor uses money to make money. This article shows you how to use hydrogen to make money.

Screw Feeders: A Guide to Selection and Use

February
2003
Fluids and Solids Handling
Thomas L. Krieger, Hermann J. Feise, Steven W. Couch, Timothy Bell
Gain insight as to what screw feeder is best for your application. Plus, learn how to size, specify and test screw feeders.

Production Modeling for Multimodal Operations

February
2004
Information Technology
Jeffrey D. Kelly
Two new views for production modeling are introduced - production flow networks and production flow maps - that focus on unit operations and feedstocks, respectively.

Designing Experiments for the Modern Micro Industries

February
2006
Computational Methods
Phillip H. Williams
Although the sparsity of effects principle is still good advice, we need to be careful of emphasizing it too much -- to the point that it becomes an assumed practice, rather than a useful rule of thumb.

Retrofit Water Systems the SHARPS Way

November
2006
Environmental Management
Norrazi Misran, Mohd Hisham Samingin, Zainuddin A. Manan, Sharifah Rafidah Wan Alwi
Use the Systematic Hierarchical Approach for Resilient Process Screening (SHARPS) technique to quickly and systematically isolate cost-effective and affordable water management options prior to design.

Predesign for Pollution Prevention and Control

June
2007
Environmental Management
Palligarnai T. Vasudevan, Gael D. Ulrich
A plant's intrinsic cleanliness is determined during the predesign stage. This article provides guidance for making critical decisions during preliminary design.

Solving Phase Equilibrium Problems

September
2008
Reactions and Separations
Terrence L. Chambers, James R. Reinhardt
Use this optimization-based approach to analyze multi-component, multi-phase Equilibria.

What Does It Mean To Be Green?

September
2009
Opinion
Phillip E. Savage, P.E.
Sustainability encompasses green chemistry and green engineering, among other concepts. This article explores some of the principles of sustainability and provides a framework for developing a lifecycle approach to chemical engineering.

Understand the Real World of Mixing

March
2010
Back To Basics
Thomas Post
Most chemical engineering curricula do not adequately address mixing as it is commonly practiced in the chemical process industries. This article attempts to fill in the gaps by explaining flow patterns, mixing techniques, and the turbulent,...

Understanding Process Safety Management

August
2010
Back To Basics
Adrian L. Sepeda
A structured risk-based approach defines the pathways to successful implementation of process safety management objectives

Account for Uncertainty in New Product Development

June
2001
Management
 Gary Blau, Gavin  Sinclair
New product development projects can be risky business. Learn how to incorporate uncertainty and risk analysis into the new product development process.

Pervaporation Comes of Age

October
2001
Reactions and Separations
Nick Wynn
This membrane process has found growing use for dehydrating organics. Uses keep increasing, mostly due to development of new, high-temperature membranes.

Step into the Virtual Plant

February
2002
Instrumentation
Mark S Sowell III, Gregory K McMillan, Michael M Mansy
The ability to warehouse process and control system knowledge offers a vast potential for improved operations by sharing a common source of information and avoiding data duplication.

Limiting Shift-Work Fatigue in Process Control

April
2003
Management
Milena D. Kekich, Karen D. Smith, Brad A. Walker
Disrupting normal sleep/wake cycles causes fatigue and reduces alertness. Here are some preventive measures that can improve the performance of employees in 24-h operations.

Nano-technology: Fueling the Chemical Industry's Future

November
2003
Special Section
Mihail C. Roco, Mindy Rittner, Daniela L. Carrillo, Paul Holister, Cristina Roman Vas, Tim Harper
Nanotechnology, as a whole, is still an emerging area with the need to make progress in both scientific and technological terms before enormous commercialization of products may occur. Nevertheless, commercial products are out there — more in some...

Implementing an EHS Management Information System

May
2004
Information Technology
Jill Barson Gilbert
Information technology issues are just as important as business and environmental, health and safety considerations. Follow these ten tips to deply an effective EMIS with a positive return on investment.

Selecting a Membrane Filtration System

December
2004
Fluids and Solids Handling
Frank Parma , Wu Chen
Proper design and scaleup of a membrane filtration system requires an understanding of the availability of membrane material, pore size and module configurations. These practical guidelines will help in the selection process.

Improving the Reliability of Mechanical Seals

November
2005
Michael Huebner
With a better understanding of seals, their selection, material considerations, and operation requirements, users can greatly improve equipment reliability and reduce operating costs.

Succeed in the Workplace

January
2007
Career Catalyst
Stan Sebastian
This top 10 list covers things you may never have been told about the real world.

Closing the Gap Between Engineers and Management

May
2010
Career Catalyst
George Buckbee, P.E.
Work-style and communication differences often result in a disconnect between managers and engineers. Bridging this culture gap will allow managers to make better business decisions and bring engineers the understanding and recognition they deserve.

Scaling Up Research to Commercial Manufacturing

November
2010
SBE Special Section
Erika Lapinskas
The production of stem-cell-based therapeutic products in large quantities is more complex than manufacturing molecular drugs. Scale-up and scale-out challenges arise related to the type of stem cell, cell expansion and banking, sterile handling,...

Reduce Piloting Time and Cost

July
2011
Process Development
Michael T. Cleary, David A. Berg
Pilot-scale experimentation is essential to establish a sound foundation for a new chemical processing unit. These best practices can reduce the time and cost involved in process development.

Inherently Safer Design: The Fundamentals

January
2012
Special Section
Dennis C. Hendershot
Build safety into your process by substituting less-hazardous materials and chemistry, minimizing inventories and equipment sizes, moderating operating conditions, and simplifying unnecessarily complex operations.

The Evolution of a Chemical Engineering Career

August
2002
Special Section
Corrine L. Kupstas
Follow this engineer's career path as she shares her thoughts on the transitions she has made and how family considerations factored into her career decisions.

Should You Use Enhanced Tubes?

April
2002
Heat Transfer
Mohamad R. Jafari Nasr, Graham T. Polley
Following this procedure to identify a basic exchanger geometry without performing a full exchanger design and to evaluate where and when heat transfer enhancement can be of benefit.

Estimate the Capacity of Simple Batch Processes

August
2002
Reactions and Separations
James L. Manganaro
Finding the throughput of a multiple-unit, multiple-step operation, even when it is relatively uncomplicated, is not always an easy matter. Several equations and graphical aids are provided to help determine yearly capacity.

Access Environmental Information on the Internet

January
2003
Environmental Management
June C. Bolstridge
These websites provide useful data, models, publications and other resources to aid environmental decision-making and regulatory compliance activities.
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